1 /* vi: set sw=4 ts=4: */
3 * tiny-ls.c version 0.1.0: A minimalist 'ls'
4 * Copyright (C) 1996 Brian Candler <B.Candler@pobox.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 * To achieve a small memory footprint, this version of 'ls' doesn't do any
23 * file sorting, and only has the most essential command line switches
24 * (i.e., the ones I couldn't live without :-) All features which involve
25 * linking in substantial chunks of libc can be disabled.
27 * Although I don't really want to add new features to this program to
28 * keep it small, I *am* interested to receive bug fixes and ways to make
32 * 1. ls -l of a directory doesn't give "total <blocks>" header
33 * 2. ls of a symlink to a directory doesn't list directory contents
34 * 3. hidden files can make column width too large
36 * NON-OPTIMAL BEHAVIOUR:
37 * 1. autowidth reads directories twice
38 * 2. if you do a short directory listing without filetype characters
39 * appended, there's no need to stat each one
41 * 1. requires lstat (BSD) - how do you do it without?
45 TERMINAL_WIDTH = 80, /* use 79 if terminal has linefold bug */
46 COLUMN_GAP = 2, /* includes the file type char */
49 /************************************************************************/
51 #include <sys/types.h>
63 #include <sys/ioctl.h>
64 #include <sys/sysmacros.h> /* major() and minor() */
67 #include <selinux/selinux.h> /* for is_selinux_enabled() */
70 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
74 /* what is the overall style of the listing */
75 #define STYLE_AUTO (0)
76 #define STYLE_COLUMNS (1U<<21) /* fill columns */
77 #define STYLE_LONG (2U<<21) /* one record per line, extended info */
78 #define STYLE_SINGLE (3U<<21) /* one record per line */
80 #define STYLE_MASK STYLE_SINGLE
81 #define STYLE_ONE_RECORD_FLAG STYLE_LONG
83 /* 51306 lrwxrwxrwx 1 root root 2 May 11 01:43 /bin/view -> vi* */
84 /* what file information will be listed */
85 #define LIST_INO (1U<<0)
86 #define LIST_BLOCKS (1U<<1)
87 #define LIST_MODEBITS (1U<<2)
88 #define LIST_NLINKS (1U<<3)
89 #define LIST_ID_NAME (1U<<4)
90 #define LIST_ID_NUMERIC (1U<<5)
91 #define LIST_CONTEXT (1U<<6)
92 #define LIST_SIZE (1U<<7)
93 #define LIST_DEV (1U<<8)
94 #define LIST_DATE_TIME (1U<<9)
95 #define LIST_FULLTIME (1U<<10)
96 #define LIST_FILENAME (1U<<11)
97 #define LIST_SYMLINK (1U<<12)
98 #define LIST_FILETYPE (1U<<13)
99 #define LIST_EXEC (1U<<14)
101 #define LIST_MASK ((LIST_EXEC << 1) - 1)
103 /* what files will be displayed */
104 /* TODO -- We may be able to make DISP_NORMAL 0 to save a bit slot. */
105 #define DISP_NORMAL (1U<<14) /* show normal filenames */
106 #define DISP_DIRNAME (1U<<15) /* 2 or more items? label directories */
107 #define DISP_HIDDEN (1U<<16) /* show filenames starting with . */
108 #define DISP_DOT (1U<<17) /* show . and .. */
109 #define DISP_NOLIST (1U<<18) /* show directory as itself, not contents */
110 #define DISP_RECURSIVE (1U<<19) /* show directory and everything below it */
111 #define DISP_ROWS (1U<<20) /* print across rows */
113 #define DISP_MASK (((DISP_ROWS << 1) - 1) & ~(DISP_NORMAL - 1))
115 #ifdef CONFIG_FEATURE_LS_SORTFILES
116 /* how will the files be sorted */
117 #define SORT_ORDER_FORWARD 0 /* sort in reverse order */
118 #define SORT_ORDER_REVERSE (1U<<27) /* sort in reverse order */
120 #define SORT_NAME 0 /* sort by file name */
121 #define SORT_SIZE (1U<<28) /* sort by file size */
122 #define SORT_ATIME (2U<<28) /* sort by last access time */
123 #define SORT_CTIME (3U<<28) /* sort by last change time */
124 #define SORT_MTIME (4U<<28) /* sort by last modification time */
125 #define SORT_VERSION (5U<<28) /* sort by version */
126 #define SORT_EXT (6U<<28) /* sort by file name extension */
127 #define SORT_DIR (7U<<28) /* sort by file or directory */
129 #define SORT_MASK (7U<<28)
132 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
133 /* which of the three times will be used */
135 #define TIME_CHANGE (1U<<23)
136 #define TIME_ACCESS (1U<<24)
138 #define TIME_MASK (3U<<23)
141 #ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
142 #define FOLLOW_LINKS (1U<<25)
144 #ifdef CONFIG_FEATURE_HUMAN_READABLE
145 #define LS_DISP_HR (1U<<26)
148 #define LIST_SHORT (LIST_FILENAME)
149 #define LIST_ISHORT (LIST_INO | LIST_FILENAME)
150 #define LIST_LONG (LIST_MODEBITS | LIST_NLINKS | LIST_ID_NAME | LIST_SIZE | \
151 LIST_DATE_TIME | LIST_FILENAME | LIST_SYMLINK)
152 #define LIST_ILONG (LIST_INO | LIST_LONG)
156 #define SPLIT_SUBDIR 2
158 #define TYPEINDEX(mode) (((mode) >> 12) & 0x0f)
159 #define TYPECHAR(mode) ("0pcCd?bB-?l?s???" [TYPEINDEX(mode)])
161 #if defined(CONFIG_FEATURE_LS_FILETYPES) || defined(CONFIG_FEATURE_LS_COLOR)
162 # define APPCHAR(mode) ("\0|\0\0/\0\0\0\0\0@\0=\0\0\0" [TYPEINDEX(mode)])
165 /* colored LS support by JaWi, janwillem.janssen@lxtreme.nl */
166 #ifdef CONFIG_FEATURE_LS_COLOR
167 static int show_color = 0;
169 #define COLOR(mode) ("\000\043\043\043\042\000\043\043"\
170 "\000\000\044\000\043\000\000\040" [TYPEINDEX(mode)])
171 #define ATTR(mode) ("\00\00\01\00\01\00\01\00"\
172 "\00\00\01\00\01\00\00\01" [TYPEINDEX(mode)])
176 * a directory entry and its stat info are stored here
178 struct dnode { /* the basic node */
179 char *name; /* the dir entry name */
180 char *fullname; /* the dir entry name */
181 struct stat dstat; /* the file stat info */
182 #ifdef CONFIG_SELINUX
183 security_context_t sid;
185 struct dnode *next; /* point at the next node */
187 typedef struct dnode dnode_t;
189 static struct dnode **list_dir(const char *);
190 static struct dnode **dnalloc(int);
191 static int list_single(struct dnode *);
193 static unsigned int all_fmt;
195 #ifdef CONFIG_SELINUX
196 static int selinux_enabled= 0;
199 #ifdef CONFIG_FEATURE_AUTOWIDTH
200 static int terminal_width = TERMINAL_WIDTH;
201 static unsigned short tabstops = COLUMN_GAP;
203 #define tabstops COLUMN_GAP
204 #define terminal_width TERMINAL_WIDTH
207 static int status = EXIT_SUCCESS;
209 static struct dnode *my_stat(char *fullname, char *name)
213 #ifdef CONFIG_SELINUX
214 security_context_t sid=NULL;
218 #ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
219 if (all_fmt & FOLLOW_LINKS) {
220 #ifdef CONFIG_SELINUX
221 if (is_selinux_enabled()) {
222 rc=0; /* Set the number which means success before hand. */
223 rc = getfilecon(fullname,&sid);
226 rc = stat(fullname, &dstat);
229 bb_perror_msg("%s", fullname);
230 status = EXIT_FAILURE;
236 #ifdef CONFIG_SELINUX
237 if (is_selinux_enabled()) {
238 rc=0; /* Set the number which means success before hand. */
239 rc = lgetfilecon(fullname,&sid);
242 rc = lstat(fullname, &dstat);
245 bb_perror_msg("%s", fullname);
246 status = EXIT_FAILURE;
251 cur = (struct dnode *) xmalloc(sizeof(struct dnode));
252 cur->fullname = fullname;
255 #ifdef CONFIG_SELINUX
261 /*----------------------------------------------------------------------*/
262 #ifdef CONFIG_FEATURE_LS_COLOR
263 static char fgcolor(mode_t mode)
265 /* Check wheter the file is existing (if so, color it red!) */
266 if (errno == ENOENT) {
269 if (LIST_EXEC && S_ISREG(mode)
270 && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
271 return COLOR(0xF000); /* File is executable ... */
275 /*----------------------------------------------------------------------*/
276 static char bgcolor(mode_t mode)
278 if (LIST_EXEC && S_ISREG(mode)
279 && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
280 return ATTR(0xF000); /* File is executable ... */
285 /*----------------------------------------------------------------------*/
286 #if defined(CONFIG_FEATURE_LS_FILETYPES) || defined(CONFIG_FEATURE_LS_COLOR)
287 static char append_char(mode_t mode)
289 if (!(all_fmt & LIST_FILETYPE))
291 if ((all_fmt & LIST_EXEC) && S_ISREG(mode)
292 && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
294 return APPCHAR(mode);
298 /*----------------------------------------------------------------------*/
300 #define countdirs(A,B) count_dirs((A), (B), 1)
301 #define countsubdirs(A,B) count_dirs((A), (B), 0)
303 static int count_dirs(struct dnode **dn, int nfiles, int notsubdirs)
307 if (dn == NULL || nfiles < 1)
310 for (i = 0; i < nfiles; i++) {
311 if (S_ISDIR(dn[i]->dstat.st_mode)
313 || ((dn[i]->name[0] != '.')
315 && ((dn[i]->name[1] != '.')
316 || dn[i]->name[2])))))
322 static int countfiles(struct dnode **dnp)
330 for (cur = dnp[0]; cur->next != NULL; cur = cur->next)
336 /* get memory to hold an array of pointers */
337 static struct dnode **dnalloc(int num)
344 p = (struct dnode **) xcalloc((size_t) num,
345 (size_t) (sizeof(struct dnode *)));
349 #ifdef CONFIG_FEATURE_LS_RECURSIVE
350 static void dfree(struct dnode **dnp)
352 struct dnode *cur, *next;
358 while (cur != NULL) {
359 free(cur->fullname); /* free the filename */
361 free(cur); /* free the dnode */
364 free(dnp); /* free the array holding the dnode pointers */
368 static struct dnode **splitdnarray(struct dnode **dn, int nfiles, int which)
373 if (dn == NULL || nfiles < 1)
376 /* count how many dirs and regular files there are */
377 if (which == SPLIT_SUBDIR)
378 dncnt = countsubdirs(dn, nfiles);
380 dncnt = countdirs(dn, nfiles); /* assume we are looking for dirs */
381 if (which == SPLIT_FILE)
382 dncnt = nfiles - dncnt; /* looking for files */
385 /* allocate a file array and a dir array */
386 dnp = dnalloc(dncnt);
388 /* copy the entrys into the file or dir array */
389 for (d = i = 0; i < nfiles; i++) {
390 if (S_ISDIR(dn[i]->dstat.st_mode)) {
391 if (which & (SPLIT_DIR|SPLIT_SUBDIR)) {
392 if ((which & SPLIT_DIR)
393 || ((dn[i]->name[0] != '.')
395 && ((dn[i]->name[1] != '.')
396 || dn[i]->name[2])))) {
400 } else if (!(which & (SPLIT_DIR|SPLIT_SUBDIR))) {
407 /*----------------------------------------------------------------------*/
408 #ifdef CONFIG_FEATURE_LS_SORTFILES
409 static int sortcmp(struct dnode *d1, struct dnode *d2)
411 unsigned int sort_opts = all_fmt & SORT_MASK;
414 dif = 0; /* assume SORT_NAME */
415 if (sort_opts == SORT_SIZE) {
416 dif = (int) (d2->dstat.st_size - d1->dstat.st_size);
417 } else if (sort_opts == SORT_ATIME) {
418 dif = (int) (d2->dstat.st_atime - d1->dstat.st_atime);
419 } else if (sort_opts == SORT_CTIME) {
420 dif = (int) (d2->dstat.st_ctime - d1->dstat.st_ctime);
421 } else if (sort_opts == SORT_MTIME) {
422 dif = (int) (d2->dstat.st_mtime - d1->dstat.st_mtime);
423 } else if (sort_opts == SORT_DIR) {
424 dif = S_ISDIR(d2->dstat.st_mode) - S_ISDIR(d1->dstat.st_mode);
425 /* } else if (sort_opts == SORT_VERSION) { */
426 /* } else if (sort_opts == SORT_EXT) { */
430 /* sort by name- may be a tie_breaker for time or size cmp */
431 #ifdef CONFIG_LOCALE_SUPPORT
432 dif = strcoll(d1->name, d2->name);
434 dif = strcmp(d1->name, d2->name);
438 if (all_fmt & SORT_ORDER_REVERSE) {
444 /*----------------------------------------------------------------------*/
445 static void shellsort(struct dnode **dn, int size)
450 /* shell short the array */
451 if (dn == NULL || size < 2)
454 for (gap = size / 2; gap > 0; gap /= 2) {
455 for (i = gap; i < size; i++) {
456 for (j = i - gap; j >= 0; j -= gap) {
457 if (sortcmp(dn[j], dn[j + gap]) <= 0)
459 /* they are out of order, swap them */
469 /*----------------------------------------------------------------------*/
470 static void showfiles(struct dnode **dn, int nfiles)
472 int i, ncols, nrows, row, nc;
475 int column_width = 0; /* for STYLE_LONG and STYLE_SINGLE not used */
477 if (dn == NULL || nfiles < 1)
480 if (all_fmt & STYLE_ONE_RECORD_FLAG) {
483 /* find the longest file name- use that as the column width */
484 for (i = 0; i < nfiles; i++) {
485 int len = strlen(dn[i]->name) +
486 #ifdef CONFIG_SELINUX
487 ((all_fmt & LIST_CONTEXT) ? 33 : 0) +
489 ((all_fmt & LIST_INO) ? 8 : 0) +
490 ((all_fmt & LIST_BLOCKS) ? 5 : 0);
491 if (column_width < len)
494 column_width += tabstops;
495 ncols = (int) (terminal_width / column_width);
499 nrows = nfiles / ncols;
500 if ((nrows * ncols) < nfiles)
501 nrows++; /* round up fractionals */
507 for (row = 0; row < nrows; row++) {
508 for (nc = 0; nc < ncols; nc++) {
509 /* reach into the array based on the column and row */
510 i = (nc * nrows) + row; /* assume display by column */
511 if (all_fmt & DISP_ROWS)
512 i = (row * ncols) + nc; /* display across row */
521 nexttab = column + column_width;
522 column += list_single(dn[i]);
530 /*----------------------------------------------------------------------*/
531 static void showdirs(struct dnode **dn, int ndirs, int first)
534 struct dnode **subdnp;
536 #ifdef CONFIG_FEATURE_LS_RECURSIVE
541 if (dn == NULL || ndirs < 1)
544 for (i = 0; i < ndirs; i++) {
545 if (all_fmt & (DISP_DIRNAME | DISP_RECURSIVE)) {
549 printf("%s:\n", dn[i]->fullname);
551 subdnp = list_dir(dn[i]->fullname);
552 nfiles = countfiles(subdnp);
554 /* list all files at this level */
555 #ifdef CONFIG_FEATURE_LS_SORTFILES
556 shellsort(subdnp, nfiles);
558 showfiles(subdnp, nfiles);
559 #ifdef CONFIG_FEATURE_LS_RECURSIVE
560 if (all_fmt & DISP_RECURSIVE) {
561 /* recursive- list the sub-dirs */
562 dnd = splitdnarray(subdnp, nfiles, SPLIT_SUBDIR);
563 dndirs = countsubdirs(subdnp, nfiles);
565 #ifdef CONFIG_FEATURE_LS_SORTFILES
566 shellsort(dnd, dndirs);
568 showdirs(dnd, dndirs, 0);
569 free(dnd); /* free the array of dnode pointers to the dirs */
572 dfree(subdnp); /* free the dnodes and the fullname mem */
578 /*----------------------------------------------------------------------*/
579 static struct dnode **list_dir(const char *path)
581 struct dnode *dn, *cur, **dnp;
582 struct dirent *entry;
593 bb_perror_msg("%s", path);
594 status = EXIT_FAILURE;
595 return (NULL); /* could not open the dir */
597 while ((entry = readdir(dir)) != NULL) {
600 /* are we going to list the file- it may be . or .. or a hidden file */
601 if (entry->d_name[0] == '.') {
602 if ((entry->d_name[1] == 0 || (
603 entry->d_name[1] == '.'
604 && entry->d_name[2] == 0))
605 && !(all_fmt & DISP_DOT))
607 if (!(all_fmt & DISP_HIDDEN))
610 fullname = concat_path_file(path, entry->d_name);
611 cur = my_stat(fullname, strrchr(fullname, '/') + 1);
620 /* now that we know how many files there are
621 ** allocate memory for an array to hold dnode pointers
625 dnp = dnalloc(nfiles);
626 for (i = 0, cur = dn; i < nfiles; i++) {
627 dnp[i] = cur; /* save pointer to node in array */
634 /*----------------------------------------------------------------------*/
635 static int list_single(struct dnode *dn)
639 #ifdef CONFIG_FEATURE_LS_USERNAME
642 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
646 #if defined(CONFIG_FEATURE_LS_FILETYPES) || defined (CONFIG_FEATURE_LS_COLOR)
651 if (dn->fullname == NULL)
654 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
655 ttime = dn->dstat.st_mtime; /* the default time */
656 if (all_fmt & TIME_ACCESS)
657 ttime = dn->dstat.st_atime;
658 if (all_fmt & TIME_CHANGE)
659 ttime = dn->dstat.st_ctime;
660 filetime = ctime(&ttime);
662 #ifdef CONFIG_FEATURE_LS_FILETYPES
663 append = append_char(dn->dstat.st_mode);
666 for (i = 0; i <= 31; i++) {
667 switch (all_fmt & (1 << i)) {
669 column += printf("%7ld ", (long int) dn->dstat.st_ino);
672 #if _FILE_OFFSET_BITS == 64
673 column += printf("%4lld ", dn->dstat.st_blocks >> 1);
675 column += printf("%4ld ", dn->dstat.st_blocks >> 1);
679 column += printf("%-10s ", (char *) bb_mode_string(dn->dstat.st_mode));
682 column += printf("%4ld ", (long) dn->dstat.st_nlink);
685 #ifdef CONFIG_FEATURE_LS_USERNAME
686 my_getpwuid(scratch, dn->dstat.st_uid, sizeof(scratch));
687 printf("%-8.8s ", scratch);
688 my_getgrgid(scratch, dn->dstat.st_gid, sizeof(scratch));
689 printf("%-8.8s", scratch);
693 case LIST_ID_NUMERIC:
694 column += printf("%-8d %-8d", dn->dstat.st_uid, dn->dstat.st_gid);
698 if (S_ISBLK(dn->dstat.st_mode) || S_ISCHR(dn->dstat.st_mode)) {
699 column += printf("%4d, %3d ", (int) major(dn->dstat.st_rdev),
700 (int) minor(dn->dstat.st_rdev));
702 #ifdef CONFIG_FEATURE_HUMAN_READABLE
703 if (all_fmt & LS_DISP_HR) {
704 column += printf("%9s ",
705 make_human_readable_str(dn->dstat.st_size, 1, 0));
709 #if _FILE_OFFSET_BITS == 64
710 column += printf("%9lld ", (long long) dn->dstat.st_size);
712 column += printf("%9ld ", dn->dstat.st_size);
717 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
719 printf("%24.24s ", filetime);
723 if ((all_fmt & LIST_FULLTIME) == 0) {
724 age = time(NULL) - ttime;
725 printf("%6.6s ", filetime + 4);
726 if (age < 3600L * 24 * 365 / 2 && age > -15 * 60) {
727 /* hh:mm if less than 6 months old */
728 printf("%5.5s ", filetime + 11);
730 printf(" %4.4s ", filetime + 20);
736 #ifdef CONFIG_SELINUX
743 /* I assume sid initilized with NULL */
744 len = strlen(dn->sid)+1;
745 safe_strncpy(context, dn->sid, len);
748 safe_strncpy(context, "unknown",8);
750 printf("%-32s ", context);
751 column += MAX(33, len);
756 #ifdef CONFIG_FEATURE_LS_COLOR
758 if (show_color && !lstat(dn->fullname, &info)) {
759 printf("\033[%d;%dm", bgcolor(info.st_mode),
760 fgcolor(info.st_mode));
763 column += printf("%s", dn->name);
764 #ifdef CONFIG_FEATURE_LS_COLOR
771 if (S_ISLNK(dn->dstat.st_mode)) {
772 char *lpath = xreadlink(dn->fullname);
776 #if defined(CONFIG_FEATURE_LS_FILETYPES) || defined (CONFIG_FEATURE_LS_COLOR)
777 if (!stat(dn->fullname, &info)) {
778 append = append_char(info.st_mode);
781 #ifdef CONFIG_FEATURE_LS_COLOR
784 printf("\033[%d;%dm", bgcolor(info.st_mode),
785 fgcolor(info.st_mode));
788 column += printf("%s", lpath) + 4;
789 #ifdef CONFIG_FEATURE_LS_COLOR
798 #ifdef CONFIG_FEATURE_LS_FILETYPES
800 if (append != '\0') {
801 printf("%1c", append);
812 /*----------------------------------------------------------------------*/
814 /* "[-]Cadil1", POSIX mandated options, busybox always supports */
815 /* "[-]gnsx", POSIX non-mandated options, busybox always supports */
816 /* "[-]Ak" GNU options, busybox always supports */
817 /* "[-]FLRctur", POSIX mandated options, busybox optionally supports */
818 /* "[-]p", POSIX non-mandated options, busybox optionally supports */
819 /* "[-]SXvThw", GNU options, busybox optionally supports */
820 /* "[-]K", SELinux mandated options, busybox optionally supports */
821 /* "[-]e", I think we made this one up */
823 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
824 # define LS_STR_TIMESTAMPS "cetu"
826 # define LS_STR_TIMESTAMPS ""
829 #ifdef CONFIG_FEATURE_LS_SORTFILES
830 # define LS_STR_SORTFILES "SXrv"
832 # define LS_STR_SORTFILES ""
835 #ifdef CONFIG_FEATURE_LS_FILETYPES
836 # define LS_STR_FILETYPES "Fp"
838 # define LS_STR_FILETYPES ""
841 #ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
842 # define LS_STR_FOLLOW_LINKS "L"
844 # define LS_STR_FOLLOW_LINKS ""
847 #ifdef CONFIG_FEATURE_LS_RECURSIVE
848 # define LS_STR_RECURSIVE "R"
850 # define LS_STR_RECURSIVE ""
853 #ifdef CONFIG_FEATURE_HUMAN_READABLE
854 # define LS_STR_HUMAN_READABLE "h"
856 # define LS_STR_HUMAN_READABLE ""
859 #ifdef CONFIG_SELINUX
860 # define LS_STR_SELINUX "K"
862 # define LS_STR_SELINUX ""
865 #ifdef CONFIG_FEATURE_AUTOWIDTH
866 # define LS_STR_AUTOWIDTH "T:w:"
868 # define LS_STR_AUTOWIDTH ""
871 static const char ls_options[]="Cadil1gnsxAk" \
875 LS_STR_FOLLOW_LINKS \
877 LS_STR_HUMAN_READABLE \
881 #define LIST_MASK_TRIGGER 0
882 #define STYLE_MASK_TRIGGER STYLE_MASK
883 #define SORT_MASK_TRIGGER SORT_MASK
884 #define DISP_MASK_TRIGGER DISP_ROWS
885 #define TIME_MASK_TRIGGER TIME_MASK
887 static const unsigned opt_flags[] = {
888 LIST_SHORT | STYLE_COLUMNS, /* C */
889 DISP_HIDDEN | DISP_DOT, /* a */
892 LIST_LONG | STYLE_LONG, /* l - remember LS_DISP_HR in mask! */
893 LIST_SHORT | STYLE_SINGLE, /* 1 */
895 LIST_ID_NUMERIC, /* n */
899 #ifdef CONFIG_SELINUX
900 LIST_CONTEXT, /* k */
904 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
905 # ifdef CONFIG_FEATURE_LS_SORTFILES
906 TIME_CHANGE | SORT_CTIME, /* c */
910 LIST_FULLTIME, /* e */
911 # ifdef CONFIG_FEATURE_LS_SORTFILES
914 0, /* t - ignored -- is this correct? */
916 # ifdef CONFIG_FEATURE_LS_SORTFILES
917 TIME_ACCESS | SORT_ATIME, /* u */
922 #ifdef CONFIG_FEATURE_LS_SORTFILES
925 SORT_ORDER_REVERSE, /* r */
926 SORT_VERSION, /* v */
928 #ifdef CONFIG_FEATURE_LS_FILETYPES
929 LIST_FILETYPE | LIST_EXEC, /* F */
930 LIST_FILETYPE, /* p */
932 #ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
933 FOLLOW_LINKS, /* L */
935 #ifdef CONFIG_FEATURE_LS_RECURSIVE
936 DISP_RECURSIVE, /* R */
938 #ifdef CONFIG_FEATURE_HUMAN_READABLE
941 #ifdef CONFIG_SELINUX
942 LIST_MODEBITS|LIST_NLINKS|LIST_CONTEXT|LIST_SIZE|LIST_DATE_TIME, /* K */
948 /*----------------------------------------------------------------------*/
950 extern int ls_main(int argc, char **argv)
965 #ifdef CONFIG_FEATURE_AUTOWIDTH
966 char *tabstops_str = NULL;
967 char *terminal_width_str = NULL;
970 all_fmt = LIST_SHORT | DISP_NORMAL | STYLE_AUTO
971 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
974 #ifdef CONFIG_FEATURE_LS_SORTFILES
975 | SORT_NAME | SORT_ORDER_FORWARD
979 #ifdef CONFIG_FEATURE_AUTOWIDTH
980 /* Obtain the terminal width. */
981 get_terminal_width_height(STDOUT_FILENO, &terminal_width, NULL);
986 #ifdef CONFIG_FEATURE_LS_COLOR
987 if (isatty(STDOUT_FILENO))
991 /* process options */
992 #ifdef CONFIG_FEATURE_AUTOWIDTH
993 opt = bb_getopt_ulflags(argc, argv, ls_options, &tabstops_str, &terminal_width_str);
995 tabstops = atoi(tabstops_str);
997 if (terminal_width_str) {
998 terminal_width = atoi(terminal_width_str);
1001 opt = bb_getopt_ulflags(argc, argv, ls_options);
1003 for (i = 0; opt_flags[i] != (1U<<31); i++) {
1004 if (opt & (1 << i)) {
1005 unsigned int flags = opt_flags[i];
1006 if (flags & LIST_MASK_TRIGGER) {
1007 all_fmt &= ~LIST_MASK;
1009 if (flags & STYLE_MASK_TRIGGER) {
1010 all_fmt &= ~STYLE_MASK;
1012 #ifdef CONFIG_FEATURE_LS_SORTFILES
1013 if (flags & SORT_MASK_TRIGGER) {
1014 all_fmt &= ~SORT_MASK;
1017 if (flags & DISP_MASK_TRIGGER) {
1018 all_fmt &= ~DISP_MASK;
1020 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
1021 if (flags & TIME_MASK_TRIGGER) {
1022 all_fmt &= ~TIME_MASK;
1025 if (flags & LIST_CONTEXT) {
1026 all_fmt |= STYLE_SINGLE;
1028 #ifdef CONFIG_FEATURE_HUMAN_READABLE
1030 all_fmt &= ~LS_DISP_HR;
1037 /* sort out which command line options take precedence */
1038 #ifdef CONFIG_FEATURE_LS_RECURSIVE
1039 if (all_fmt & DISP_NOLIST)
1040 all_fmt &= ~DISP_RECURSIVE; /* no recurse if listing only dir */
1042 #if defined (CONFIG_FEATURE_LS_TIMESTAMPS) && defined (CONFIG_FEATURE_LS_SORTFILES)
1043 if (all_fmt & TIME_CHANGE)
1044 all_fmt = (all_fmt & ~SORT_MASK) | SORT_CTIME;
1045 if (all_fmt & TIME_ACCESS)
1046 all_fmt = (all_fmt & ~SORT_MASK) | SORT_ATIME;
1048 if ((all_fmt & STYLE_MASK) != STYLE_LONG) /* only for long list */
1049 all_fmt &= ~(LIST_ID_NUMERIC|LIST_FULLTIME|LIST_ID_NAME|LIST_ID_NUMERIC);
1050 #ifdef CONFIG_FEATURE_LS_USERNAME
1051 if ((all_fmt & STYLE_MASK) == STYLE_LONG && (all_fmt & LIST_ID_NUMERIC))
1052 all_fmt &= ~LIST_ID_NAME; /* don't list names if numeric uid */
1055 /* choose a display format */
1056 if ((all_fmt & STYLE_MASK) == STYLE_AUTO)
1058 all_fmt = (all_fmt & ~STYLE_MASK)
1059 | (isatty(STDOUT_FILENO) ? STYLE_COLUMNS : STYLE_SINGLE);
1061 all_fmt |= (isatty(STDOUT_FILENO) ? STYLE_COLUMNS : STYLE_SINGLE);
1065 * when there are no cmd line args we have to supply a default "." arg.
1066 * we will create a second argv array, "av" that will hold either
1067 * our created "." arg, or the real cmd line args. The av array
1068 * just holds the pointers- we don't move the date the pointers
1071 ac = argc - optind; /* how many cmd line args are left */
1073 av = (char **) xcalloc((size_t) 1, (size_t) (sizeof(char *)));
1074 av[0] = bb_xstrdup(".");
1077 av = (char **) xcalloc((size_t) ac, (size_t) (sizeof(char *)));
1078 for (oi = 0; oi < ac; oi++) {
1079 av[oi] = argv[optind++]; /* copy pointer to real cmd line arg */
1083 /* now, everything is in the av array */
1085 all_fmt |= DISP_DIRNAME; /* 2 or more items? label directories */
1087 /* stuff the command line file names into an dnode array */
1089 for (oi = 0; oi < ac; oi++) {
1090 char *fullname = bb_xstrdup(av[oi]);
1092 cur = my_stat(fullname, fullname);
1100 /* now that we know how many files there are
1101 ** allocate memory for an array to hold dnode pointers
1103 dnp = dnalloc(nfiles);
1104 for (i = 0, cur = dn; i < nfiles; i++) {
1105 dnp[i] = cur; /* save pointer to node in array */
1109 if (all_fmt & DISP_NOLIST) {
1110 #ifdef CONFIG_FEATURE_LS_SORTFILES
1111 shellsort(dnp, nfiles);
1114 showfiles(dnp, nfiles);
1116 dnd = splitdnarray(dnp, nfiles, SPLIT_DIR);
1117 dnf = splitdnarray(dnp, nfiles, SPLIT_FILE);
1118 dndirs = countdirs(dnp, nfiles);
1119 dnfiles = nfiles - dndirs;
1121 #ifdef CONFIG_FEATURE_LS_SORTFILES
1122 shellsort(dnf, dnfiles);
1124 showfiles(dnf, dnfiles);
1127 #ifdef CONFIG_FEATURE_LS_SORTFILES
1128 shellsort(dnd, dndirs);
1130 showdirs(dnd, dndirs, dnfiles == 0);